<template>
    <div class="upload-container">
        <el-button :style="{background:color,borderColor:color}" icon="el-icon-upload" size="mini" type="primary" @click=" dialogVisible=true"> upload </el-button>
        <el-dialog :visible.sync="dialogVisible">
            <el-upload
                :multiple="true"
                :file-list="fileList"
                :show-file-list="true"
                :on-remove="handleRemove"
                :on-success="handleSuccess"
                :before-upload="beforeUpload"
                class="editor-slide-upload"
                action="https://httpbin.org/post"
                list-type="picture-card"
            >
                <el-button size="small" type="primary"> Click upload </el-button>
            </el-upload>
            <el-button @click="dialogVisible = false"> Cancel </el-button>
            <el-button type="primary" @click="handleSubmit"> Confirm </el-button>
        </el-dialog>
    </div>
</template>

<script>
    // import { getToken } from 'api/qiniu'

    export default {
        name: "EditorSlideUpload",
        props: {
            color: {
                type: String,
                default: "#1890ff",
            },
        },
        data() {
            return {
                dialogVisible: false,
                listObj: {},
                fileList: [],
            };
        },
        methods: {
            checkAllSuccess() {
                return Object.keys(this.listObj).every((item) => this.listObj[item].hasSuccess);
            },
            handleSubmit() {
                const arr = Object.keys(this.listObj).map((v) => this.listObj[v]);
                if (!this.checkAllSuccess()) {
                    this.$message("Please wait for all images to be uploaded successfully. If there is a network problem, please refresh the page and upload again!");
                    return;
                }
                this.$emit("successCBK", arr);
                this.listObj = {};
                this.fileList = [];
                this.dialogVisible = false;
            },
            handleSuccess(response, file) {
                const uid = file.uid;
                const objKeyArr = Object.keys(this.listObj);
                for (let i = 0, len = objKeyArr.length; i < len; i++) {
                    if (this.listObj[objKeyArr[i]].uid === uid) {
                        this.listObj[objKeyArr[i]].url = response.files.file;
                        this.listObj[objKeyArr[i]].hasSuccess = true;
                        return;
                    }
                }
            },
            handleRemove(file) {
                const uid = file.uid;
                const objKeyArr = Object.keys(this.listObj);
                for (let i = 0, len = objKeyArr.length; i < len; i++) {
                    if (this.listObj[objKeyArr[i]].uid === uid) {
                        delete this.listObj[objKeyArr[i]];
                        return;
                    }
                }
            },
            beforeUpload(file) {
                const _self = this;
                const _URL = window.URL || window.webkitURL;
                const fileName = file.uid;
                this.listObj[fileName] = {};
                return new Promise((resolve, reject) => {
                    const img = new Image();
                    img.src = _URL.createObjectURL(file);
                    img.onload = function () {
                        _self.listObj[fileName] = { hasSuccess: false, uid: file.uid, width: this.width, height: this.height };
                    };
                    resolve(true);
                });
            },
        },
    };
</script>

<style lang="scss" scoped>
    .editor-slide-upload {
        margin-bottom: 20px;
        ::v-deep .el-upload--picture-card {
            width: 100%;
        }
    }
</style>
